gardiner



"No Model.) 3 Sheets-Sheet 1.

H. K. GARDINER. MACHINE FOR TRIMMING ENDS 0F SHOE LASTS.

No. 555,912. Patented Mar. 3, 1896.

(No Model.) 3 Sheets-Sheet 2.

H. K. GARDINER. MACHINE FOR TRIMMING ENDS 0F SHOE LASTS.

No. 555,912. Patented Mar. 3, 1.896.

(No Model.) 3 Sheets-Sheet 3. H. K. GARDINER. MACHINE FOR TRIMMING ENDS OP SHOE LASTS. N0. 555,912.

Patented Mar. 3, 1896.

NITED STATES PATENT OFFICE.

HIMSELF AND GEORGE N. MORSE, OF SAME PLACE.

MACHINE FOR TRIMMING ENDS OF SHOE-LASTS.

SPECIFICATION forming part of Letters Patent No. 555,912, dated March 3, 1896.

' A li ti fil d March 7, 1894. Serial No. 502,761. (No model.)

To a. whom/it may concern.-

Be it known that 1, HARRY K. GARDINER, a citizen of the United States, residing at \Vorcester, in the State of Massachusetts, have invented a new and useful Improvement in Machines for Trimming the ends of Shoe- Lasts, of which the following is a specification.

eral lasts may be trimmed simultaneously;v

and it consists in the improved construction of the machine and of the device for holding the lasts to be trimmed, as hereinafter set forth.

111 the accompanying drawings, Figure 1 represents a front view of the machine with the clamping-frame removed. Fig. 2 represents an end View with the clamping-frame in an inclined position. Fig. 3 represents a detail end view of the machine with one of the cutter-heads removed to show the adjustable gage-plate for the last-pattern. Fig. 4 represents a top view of the machine with the clamping-frame in position. Fig. 5 represents an end view of the machine as in Fig. 2, withthe clamping-frame in a horizontal position. Fig. 6 represents a top view of the clamping-frame separate from the machine. Fig. 7 represents a section taken in the line 7 '7 of Fig. 6. Fig. 8 representsa modification.

In the drawings, A represents the bedframe of the machine, upon which may be secured any desired number of spindle-heads B 13, having bearings a a for the spindles O G of the revolving cutter-heads I) I), pro vided with slots 1) b for the cutters E E, and upon the transverse guide-trackc of the bed plate A is placed the gage-plate F, which is grooved at its under side to fit the guidetrack and provided with the lug (Z, which is screw-threaded to receive the hand-screw G, by means of which the gage-plate F is to be properly adjusted for governing contact with the pattern-last held in one of the clamps of the clamping-frame H.

To the projecting bearing-arms e e at one side of thelegs I I of the bed-frame A is pivoted the rocking frame J, comprising the arms f f, secured to the pivot-rod g, the weighted arm h, and the bar 2', provided with the open bearings j j j, which are adapted to receive the journals ls 7c is of the clampingframe H, the adjustable weight Z upon the arm h serving to rock the frame J toward the cutterheads D D to contact with a suitable stop m, which may be located at the outer side of the bearing-arm e, and thus serve to limit the inward movement of the frame.

The clamping-frame His formed of the two square parallel bars K K, each provided with the journals 7t 7t 7x), adapted to loosely fit the bearingsjj j of the frame J, the said bars being linked to each other by means of the linking-plates mm of the holding-clamps L L L, which are loosely jointed to the said bars by means of the pivot-bolts 0 0, so as to form a parallel movement. The linking-plate n is provided at one side with an upright clamping-jaw p, in which is secured an inwardlyprojecting stud q, adapted to form a bearing rest or gage for the instep of the last 15, (shown in dotted lines,) and at the opposite side with the recess 0", adapted to receive the movable clamp-jaw s, which is operated to clamp the last if by means of the thumb-screw u.

The clamping-frame H (shown in the drawings) is adapted for operating upon two lasts at the same time, the pattern-last being held in the intermediate clamp L to bear against the governing gage'plate F.

In operating With the machine the two lasts to be trimmed are to be securely held in the clamps L L, with their insteps resting against the inwardly-projecting stud or gage q and the journals 7c 70 of the bar K of the holder H placed in the open bearings j jj of the rocking frame .I. Then upon turning the clamping-frame H in a vertical plane and moving the free bar K endwise from side to side the projecting ends of the lasts will be trimmed by the action of the revolving cutters E E until the corresponding end of the pattern-last held in the clamp L bears properly against the governing gage -plate F. Then upon removing the bar K from the bearings j j and reversing the clamping-frame H, so that the bar K is placed in the said bearings, the opposite ends of the lasts may be ICO in like manner operated upon by the cutters until the patterndast again bears properly against the gage-plate F, the clamping-frame H being drawn forward as the cutting proceeds by means of the weight Zupon the arm h of the rocking frame J until the proper amount of cutting has been completed to finish the projecting ends of the lasts.

The clamping-frame H may be adapted for carrying either one or any desired number of lasts, and the rocking frame J, which forms a bearing-support for the clamping-frame, may be employed without the weighted arm, the said rocking frame being readily pressed forward by the operator upon the proper insertion of the journals of the clamping-frame, and instead of the rocking frame J, which forms a bearing-support for the clampingframe, the said bearing-support may be formed by a properly-guided sliding piece H, arranged to slide upon the top of the bedframe A of the machine, as shown in Fig. 8.

I claim as my invention- 1. In a machine for trimming the ends of shoe-lasts, the combination with the revolving cutter-heads and the gage-plate of the movable bearing-support, and aclampingframe provided with a journal-bar having clamps jointed thereto for parallel movement, substantially as described.

2. In a machine for trimming the ends of shoe-lasts, a reversible clamping-frame provided with opposite journal-bars connected by means of links which form a jointed parallel movement, substantially as described.

3. In a machine for trimming the ends of shoe-lasts, a reversible clamping-frame provided with opposite journal-bars connected by links which form a jointed parallel movement, and the holding-clamps, substantially as described.

4. In a machine for trimming the ends of shoe-lasts, a reversible clamping-frame provided with opposite journal-bars connected by links which form a jointed parallel movement, and the holding-clamps provided with a gage for the instep of the last, substantially as described.

HARRY K. GARDINER. WVitnesses:

GEOJN. MoRsE, CHAS. S. FORBES. 

